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Climate

This paint ‘sweats’ to keep your house cool

This experimental paint reflects sunlight, emits heat and mimics sweating to cool buildings without air conditioning, even in the tropics.

Health & Medicine

A genetic test may predict which weight loss drugs work best for patients

Variants of obesity-related genes influence how much weight patients lose on specific weight loss drugs like liraglutide, two studies report.

Animals

This spider’s barf is worse than its bite

Most spider species subdue dinner by injecting venom from their fangs. Feather-legged lace weavers swathe prey in silk, then upchuck a killing brew.

Neuroscience

At early ages, autism in girls and boys looks similar

A new study of more than 2,500 children under 5 found little difference in autism symptoms between boys and girls.